Data Notes

Many data series published in the Washington State Data Book are available in separate publications released by the contributing agencies. These source documents generally provide updated data on a more frequent and detailed basis than the Data Book, as well as data definitions and user information not included in the Data Book.

The contributing agency websites and contact information are provided in the Contributing Agencies section. Please contact the contributing agencies for additional data, explanations, or updated information.

Unless otherwise noted, the time periods in this publication are either calendar year or fiscal year. The following types of fiscal year are used in the tables:

State Fiscal Year - July 1 through the following June 30;
Federal Fiscal Year - October 1 through the following September 30; and
School Fiscal Year - September 1 through the following August 31.
Biennium - Two-year fiscal period starting July 1 of an odd-numbered year and ending June 30 of the next odd-numbered year.

Real dollars are dollars that have been adjusted to account for the effect of inflation. This adjustment is made in relation to a base year. Statistics from years after the base year are adjusted down by inflation; those before are adjusted up. This allows actual (or real) changes to be observed.

Current dollars have not been adjusted in any way.

Financial data are in current dollars unless otherwise noted.